弱磁场处理对烘干硬化水玻璃型砂性能的影响

周洪

doi:10.15980/j.tzzz.2021.12.026

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弱磁场处理对烘干硬化水玻璃型砂性能的影响
Influence of Low-intensity Magnetic Field on Properties of Drying Hardened Sodium Silicate Molding Sand
2021年41卷第12期页码：1575-1577
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.12.026

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周洪. 弱磁场处理对烘干硬化水玻璃型砂性能的影响[J]. 特种铸造及有色合金杂志, 2021,41(12):1575-1577.

Zhou Hong. Influence of Low-intensity Magnetic Field on Properties of Drying Hardened Sodium Silicate Molding Sand[J]. Special Casting & Nonferrous Alloys, 2021,41(12):1575-1577.
周洪. 弱磁场处理对烘干硬化水玻璃型砂性能的影响[J]. 特种铸造及有色合金杂志, 2021,41(12):1575-1577. DOI： 10.15980/j.tzzz.2021.12.026.

Zhou Hong. Influence of Low-intensity Magnetic Field on Properties of Drying Hardened Sodium Silicate Molding Sand[J]. Special Casting & Nonferrous Alloys, 2021,41(12):1575-1577. DOI： 10.15980/j.tzzz.2021.12.026.

摘要

用磁选管设备处理水玻璃

研究了磁感应强度和处理时间对烘干硬化水玻璃砂性能的影响。试验发现

在弱磁场中水玻璃最佳处理方案是磁感应强度为0.4 T、磁化处理时间为30 min

型砂强度提高约37%

可减少型砂中水玻璃加入量20%。结果表明

弱磁场对水玻璃进行处理可以降低水玻璃的粘度

同时也可提高水玻璃砂的干抗压强度;磁化处理的水玻璃砂型要比未磁化处理的应更注意防潮。

Abstract

The effects of magnetic induction intensity and treatment time on the properties of drying hardened sodium silicate molding sand were investgated through treating sodium silicate with magnetic separator.It is found that the optimited treatment scheme of sodium silicate in low-intensity magnetic field is magnetic induction of 0.4 T and magnetization treatment time of 30 min

where the strength of molding sand can be increased by about 37%

and the amount of sodium silicate in molding sand can be reduced by 20%. The results show that the viscosity of sodium silicate can be reduced and the dry compressive strength of sodium silicate sand can be improved by low magnetic field treatment. The sand mold made of magnetized sodium silicate should be paid more attention to moisture-proof than that of unmagnetized sodium silicate.